now california congressman darrell issa who oversees d.c. affairs is asking the district and federal national capital planning commission to help decidetaller buildings could be constructed in the city. at a surprise birthday party wednesday for mayor gray, the head of the council's revenue committee, welcomed the new year's long study but with caution. >> what i want to avoid is a crystal city, where you have the monolithic buildings. >> reporter: he suggested new york avenue could be away from neighborhoods. some citizens in the district worry the iconic skyline would be changed by the higher builds. they stress that residential neighborhoods and the city's extensive monumental core would be protected from larger buildings that could change the character of the city. >> if you built a 20-story building, which is going to impact the air, light, things of that nature, would that have a detrimental effect on your quality of life and hence you wouldn't build it. st. elizabeth's, people talk about it all the time. if people do not support the i